Finding the Third Proportional to 2,425,211 and 5,280,990

Step by Step Solution

1. Step 1: Write the proportion equation
   2,425,211 : 5,280,990 = 5,280,990 : x
2. Step 2: Convert to fraction form
   2,425,211/5,280,990 = 5,280,990/x
3. Step 3: Cross multiply
   2,425,211x = 5,280,990 × 5,280,990
4. Step 4: Simplify right side
   2,425,211x = 27,888,855,380,100
5. Step 5: Solve for x
   x = 27,888,855,380,100/2,425,211
6. Step 6: Final answer
   x = 11,499,558.34